Improvement in safes



'UNITED STATES yPartnern* OFFICEa I JOHN B. CORNELL, OF NEW YORK, N. Y.

IMPROVEMENT IN SAFES.

Specification forming part of Letters Patent No. 59,189, dated October 30, 1866.

To all whom t may concern:

Be it known that I, JOHN B. CORNELL, of the city, county, and State of New York, have invented a new and useful Improvement in Burglar-Proof Safes, Vaults, Ste.; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, lnaking a part of this specication. A

My invention appertains to that class of t safes in which the walls or other portions thereof are composed of double or treble metallic plates placed contiguous to and united with each other, and with the spaces between the same lled with molten iron or other metal.

Wy improvement consists in securely uniting parallel and contiguous metallic plates by the act of filling the space between them with molten iron or other metal, and in such a manner as to leave no evidence on the exterior surfaces of said plates of the manner in which v they are united with each; or, in other words,

leaving the exterior surfaces of said plates en tirely sound and intact.

This I accomplish by forming channels or recesses c c of a dovetail shapein the inner surfaces of said plates A A, or by screwing oppositely-projeetin g anchors d d into the inner surfaces of said plates, as shown in the accompanying drawings 5 or the said anchors and the dovetail channels and recesses may be employed in the same set ofplates, as shown in the drawings.

Where three plates, A B A, are connected with each other in the manufacture of safes, &c., the central plate, B, may be perforated with apertures which flare outwardly from the The melted metal, as it is run into the space between the contiguous plates A A B, will flow into the dovetail channels and recesses c c in said plates, and will also closely embrace the anchors d d, and, consequently, the hard-v ening of said metal will unite the said plates with each other in the tirmest and most tenacious manner.

The factthat there is no appearance of boltheads on the exterior surface of my improved safe must necessarily render it'impossible for a burglar to penetrate the walls thereof by any known method of operation.

Having fully described my improvement in burglar-proof safes, what I claim therein as new, and desire to secure by Letters Patent, 1s-

Uniting parallel and contiguous plates of metal with each other by the act of lilling the spaces between said plates with molten iron, or other metal or composition, and the inow of a portion of the same intolchannels orarecesses of a dovetail shape formed in the inner surfaces of said plates, but not entirely through the same, substantially in the manner repre' sented in the drawings, and herein described.

The aforegoing is a full and clear specication of my new and useful improvement in burglar-proof safes, vaults, &c.

JOHN B. CORNELL. Witnesses:

A. A. JAYNE, C. H. FIELD. 

